Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Raster

1:100,000 Digital Raster Graphics for Delaware

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

2.
Raster

1:100,000 Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

3.
Raster

1:100,000 Digital Raster Graphics for Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

4.
Raster

1:100,000 Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

5.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

6.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for Virginia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

7.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

8.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for New Jersey

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

9.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for the District of Columbia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

10.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

11.
Raster

1:24,000 -7.5 minute digital elevation models (DEM) for West Virginia (30 meter)

2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

12.
Raster

1:250,000 Digital Raster Graphics for Delaware

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

13.
Raster

1:250,000 Digital Raster Graphics for Maryland

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

14.
Raster

1:250,000 Digital Raster Graphics for Virginia

2000. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

15.
Raster

1:250,000 Digital Raster Graphics for West Virginia

2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

16.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

1:250k Digital Raster Graphic - Collars Removed: Minnesota

1998. U.S. Geological Survey and Minnesota DNR and Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

17.
Raster

Above-Ground Biomass, 30 Meter Resoulution, Statewide: Maryland, 2011

2011. University of Maryland, NASA. Maryland aboveground biomass map [30m] generated using Random Forests regression models. Last Updated: 2011.

18.
Image

Aerial Image Service: Lorain County, Ohio, 1999

1999. 1999_Aerial_Image_Service.

19.
Image

Aerial Imagery, 1 Meter Resolution, Statewide, National Agriculture Imagery Program: Maryland, 2017

2017. U.S. Department of Agriculture. The National Agriculture Imagery Program (NAIP) acquires aerial imagery during the agricultural growing seasons in the continental United States. T...

20.
Image

Aerial Imagery, 3 Inch Resolution: Baltimore, Annapolis, Gaithersburg, Maryland, 2014, 2016

2014, 2016. U.S. Department of Agriculture. This image service provides Three Inch resolution aerial imagery for the State of Maryland. The imagery for this service is composed of imagery flo...

21.
Image

Aerial Imagery, 6 Inch Resolution, Statewide: Maryland, 2014, 2016

2014, 2016. U.S. Department of Agriculture. This image service provides Six Inch resolution aerial imagery for the State of Maryland. The imagery for this service is composed of imagery flown...

22.
Vector Created with Sketch.

Aerial Imagery (DOQ) Grid: Michigan, 1992-1998

1992-1998. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

23.
Aerial Imagery: Hennepin County, Minnesota, 1940

Aerial Imagery: Hennepin County, Minnesota, 1940

1940. Rectified black and white aerial imagery of portions of Hennepin County captured during the summer of 1940.

24.
Aerial Imagery: Hennepin County, Minnesota, 1953

Aerial Imagery: Hennepin County, Minnesota, 1953

1953. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1953.

25.
Aerial Imagery: Hennepin County, Minnesota, 1957

Aerial Imagery: Hennepin County, Minnesota, 1957

1957. Rectified black and white aerial imagery of Hennepin County captured during the spring of 1957.

26.
Aerial Imagery: Hennepin County, Minnesota, 1964

Aerial Imagery: Hennepin County, Minnesota, 1964

1964. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1964.

27.
Aerial Imagery: Hennepin County, Minnesota, 1969

Aerial Imagery: Hennepin County, Minnesota, 1969

1969. Rectified black and white aerial imagery of Hennepin County from 1969.

28.
Aerial Imagery: Hennepin County, Minnesota, 1988

Aerial Imagery: Hennepin County, Minnesota, 1988

1988. Rectified black and white aerial imagery of the City of Minneapolis captured during the spring of 1988.

29.
Aerial Imagery: Hennepin County, Minnesota, 1989

Aerial Imagery: Hennepin County, Minnesota, 1989

1989. Rectified black and white aerial imagery of western Hennepin County captured during the spring of 1989.

30.
Aerial Imagery: Hennepin County, Minnesota, 2000

Aerial Imagery: Hennepin County, Minnesota, 2000

2000. True color aerial orthophotography of Hennepin County captured during the spring of 2000.

31.
Aerial Imagery: Hennepin County, Minnesota, 2002

Aerial Imagery: Hennepin County, Minnesota, 2002

2002. True color aerial orthophotography of Hennepin County captured during the spring of 2002.

32.
Aerial Imagery: Hennepin County, Minnesota, 2004

Aerial Imagery: Hennepin County, Minnesota, 2004

2004. True color aerial orthophotography of Hennepin County captured during the spring of 2004.

33.
Aerial Imagery: Hennepin County, Minnesota, 2005

Aerial Imagery: Hennepin County, Minnesota, 2005

2005. True color aerial orthophotography of Hennepin County captured in 2005 by the USDA Farm Service Agency.

34.
Aerial Imagery: Hennepin County, Minnesota, 2006

Aerial Imagery: Hennepin County, Minnesota, 2006

2006. True color aerial orthophotography of Hennepin County captured during the spring of 2006.

35.
Aerial Imagery: Hennepin County, Minnesota, 2009

Aerial Imagery: Hennepin County, Minnesota, 2009

2009. True color aerial orthophotography of Hennepin County captured during the spring of 2009.

36.
Aerial Imagery: Hennepin County, Minnesota, 2012

Aerial Imagery: Hennepin County, Minnesota, 2012

2012. True color aerial orthophotography of Hennepin County captured during the spring of 2012.

37.
Aerial Imagery: Hennepin County, Minnesota, 2015

Aerial Imagery: Hennepin County, Minnesota, 2015

2015. True color aerial orthophotography of Hennepin County captured during the spring of 2015.

38.
Vector Created with Sketch.

Aerial Imagery Index Grid, 12-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

39.
Vector Created with Sketch.

Aerial Imagery Index Grid, 1-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

40.
Vector Created with Sketch.

Aerial Imagery Index Grid, 3-foot Resolution: Prince George's County, Maryland, 1998

1998. The Maryland-National Capital Park & Planning Commission.

41.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1965

1965. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

42.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1968

1968. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

43.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 1972

1972. The Maryland-National Capital Park & Planning Commission. The Commission has purchased a set of black & white imagery paper prints for all of Prince George's County, Maryland. This GIS point layer is used ...

44.
Vector Created with Sketch.

Aerial Imagery Index Points: Prince George's County, Maryland, 2014

2014. The Maryland-National Capital Park & Planning Commission. The Commission purchased imagery for Spring 2014 from Kucera International, Inc. for all of Prince George's County, Maryland. This GIS point layer...

45.
Aerial Imagery: Sherburne County, Minnesota, 2014

Aerial Imagery: Sherburne County, Minnesota, 2014

2014. Aerial imagery obtained in the spring of 2014.

46.
Aerial Imagery: Sherburne County, Minnesota, 2015

Aerial Imagery: Sherburne County, Minnesota, 2015

2015. Digital Color orthophotography covering Sherburne County, Minnesota.

47.
Point image/svg+xml

Aerial Photo Centers, Maryland Imagery Acquisition Flight Information: Maryland

2018. Aerial photography centers for the 2016 & 2017 high-resolution imagery acquisition.

48.
Image

Aerial Photo Color 2003-2006 (cached mapservice): Pennsylvania

2010. PAMAP Program Cycle 1/DVRPC 2005 Digital Orthoimagery High Resolution Orthoimage (2003 - 2006) - cached mapservice.

49.
Aerial Photo Counties: Iowa, 2016

Aerial Photo Counties: Iowa, 2016

2016. These county-wide datasets have been up-sampled to a one-meter-resolution raster, in jp2 format.

50.
Polygon

Aerial Photo Grid: Dublin, Ohio

2015. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...